Search for dissertations about: "power quality"

Showing result 1 - 5 of 541 swedish dissertations containing the words power quality.

  1. 1. Power Electronics for Mitigation of Voltage Sags and Improved Control of AC Power Systems

    University dissertation from Institutionen för elkraftteknik

    Author : Marcio Magalhães de Oliveira; KTH.; [2000]
    Keywords : power electronics; power quality; voltage sags; voltage-source converters; Custom Power; FACTS; real-time simulations; solid-state devices;

    Abstract : The thesis deals with the application of compensators andswitches based on power electronics in AC transmission anddistribution systems. The objective of the studieddevices/equipment is the power flow and voltage control intransmission systems and the mitigation of voltage sags andmomentary interruptions to critical loads in distributionsystems. READ MORE

  2. 2. Artificial Intelligence-Based Characterization and Classification Methods for Power Quality Data Analytics

    University dissertation from Luleå : Luleå University of Technology

    Author : Azam Bagheri; Luleå tekniska universitet.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power System; power Quality; Voltage Dip; Big Data; Deep Learning; Machine Learning; Active Learning; Consensus Contriol; Electric Power Engineering; Elkraftteknik;

    Abstract : One of the important developments in the electric power system is the fast increasing amount of data. An example of such data is formed by the voltages and currents coming from power-quality measurements. READ MORE

  3. 3. On monitoring voltage transients in medium and low voltage power systems

    University dissertation from Luleå : Luleå University of Technology

    Author : Anna Tjäder; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Clarke transformation; ESPRIT; overvoltage; surges; power system; power quality; capacitor switching; transients; power quality monitoring;

    Abstract : .... READ MORE

  4. 4. Wind-turbine harmonic emissions and propagation through a wind farm

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Kai Yang; Luleå tekniska universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Renewable energy; Electric power system; Wind power; Power quality; Power system harmonics; Technology - Electrical engineering; electronics and photonics; Teknikvetenskap - Elektroteknik; elektronik och fotonik; Electric Power Engineering; Elkraftteknik; Energy Engineering; Energiteknik;

    Abstract : The increasing demand for sustainable energy is one of the driving forces behind the increasing use of wind power by means of wind-turbines in electric power systems. Modern wind turbines commonly employ variable-speed-generator technology associated with a power-electronic converter as part of the grid connection. READ MORE

  5. 5. Modeling, Control and Protection of Low-Voltage DC Microgrids

    University dissertation from Stockholm : KTH

    Author : Daniel Salomonsson; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; circuit transient analysis; dc power systems; dispersed storage and generation; load modeling; power conversion; power distribution control; power distribution faults; power distribution protection; power electronics; TECHNOLOGY Electrical engineering; electronics and photonics Electric power engineering; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elkraftteknik;

    Abstract : Current trends in electric power consumption indicate an increasing use of dc in end-user equipment, such as computers and other electronic appliances used in households and offices. With a dc power system, ac/dc conversion within these loads can be avoided, and losses reduced. READ MORE